Hello,
I believe one truly nice feature will be a market hero. A place where you can sell an unused hero for an amount of coins. No buying feature only sell. I'm sure that I'm not the only one who gathered a lot of heroes , but a big part of them are unused anymore. I think if I've invested in one hero 1 000 000 coins at least 30% i should be able to get back from this market.
Also another improvement i consider it useful is regarding gears and hero items. It's very annoying to wait or refresh the market stock. It would be very easy if i would have the possibility to go to one hero properties , click on the empty box and just buy with gems/coins or obtain via campaign ( features already available) the needed item.
In general will be also a good idea if coins , gems , redeems will be easier to obtain.
In the final , you really should do something with the stamina. The generation level it's incredible low. Most of this game players are very addicted and would enjoy to spend more time playing. Often i travel or i just wait for time goes. I like to play the game but with this low level of stamina i finish my work in game in few moments.
Like i said, i know that pleasure have a cost. I've spend some dollars in this game but I'm still unhappy regarding my progress or my heroes.
I hope i will not be totally ignored.
Good luck with game updates.
Good job!
Thank you.